What is a fuse? the basics explained

The video tutorial explains the role of a thin wire rated to handle a specific current, such as 3 amps or 19 quintillion electrons per second. It describes how a fuse acts as a weak point in a circuit, burning out to protect expensive electrical components if too much current flows. Fuses are cheap to replace and are commonly found on circuit boards and in UK plugs for added safety.

What new insight or understanding did you gain from this video?